I have spent the last 8 hours with the same problem, and when I found this thread I was SO HAPPY!! but... it didn't work :cry:
My right blocks disappeared. So I tried some mods/fixes, they didn't work. Uninstalled the mods, and now I have right blocks on Home ONLY.. but no Center blocks anymore..
lol
It actually all started with me being unable to submit rank images in forum admin, and led to my site slowly disappearing..
Like I said, I have installed mods and changed files in attempt to fix it, but have installed mods, and replaced the files that I changed.
the site is here
If anyone knows why this might be happening please let me know!
for now I am going to leave the fix mentioned in this thread as is, so that's about all I have changed in my files.